Wing assembly for road graders



June 19, 1956 P. w. GRABOW 2,750,688

WINGASSEMBLY FOR ROAD GRADERS Filed Nov. 29, 1954 2 Sheets-Sheet 1 Paul W. Grabaw INVENTOR.

June 19, 1956 P. w. GRABOW 2,750,688

WING ASSEWBLY FOR ROAD GRADERS 2 Sheets-Sheet 2 Filed NOV. 29, 1954 N 9 m S Q N M l Q y ,l; N v V 2 0- v I & N

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BY wyawfim United States Patent WING ASSEMBLY FOR ROAD GRADERS Paul W. Grabow, Twin Brooks, S. Dak.

Application November 29, 1954, Serial No. 471,725

1 Claim. (Cl. 37-155) This invention relates to an attachment for a road grader and like machinery, and more particularly to a novel method of mounting and controlling a wing blade.

The primary object of the present invention resides in the provision of novel means for adjustably mounting and controlling the position of a wing blade on a road grader or similar machine.

A further object of the invention resides in the provision of means for adjusting a wing blade by the operator of a road grader or like vehicle without necessitating the operators leaving his seat.

The construction of this invention features a telescopic rod which is slidably received in a sleeve carried by a bracket mounted on the road grader. A winch is provided which has a cable entrained therearound which is connected to the telescopic rod. There is also provided means for maintaining the cable taut at all times, and brake means associated with the winch whereby means for absorbing shocks imparted on the wing blade are provided while also holding the wing blade in the selected position due to the fact that the cable is maintained taut at all times.

Still further objects and features of this invention reside in the provision of an attachment for a road grader which is capable of being utilized for various purposes, such as a snow plow, auxiliary surfacing equipment, and the like, which is strong and durable, and which is highly efficient in operation while being inexpensive to construct and install.

These, together with the various ancillary objects and features of the invention which will become apparent as the following description proceeds, are attained by this wing assembly for road graders, a preferred embodiment of which has been illustrated in the accompanying drawings, by way of example only, wherein:

Figure 1 is a plan view showing the invention as operatively installed on a road grader;

Figure 2 is a side elevational view illustrating the wing assembly as installed;

Figure 3 is an enlarged horizontal sectional view of the winch and associated means for controlling the position of the telescopic rod;

Figure 4 is a sectional detail view illustrating the construction of the winch and the brake means provided therefor; and

Figure 5 is a sectional detail view as taken along the plane of line 55 in Figure 4.

With continuing reference to the accompanying drawings, wherein like reference numerals designate similar parts throughout the various views, reference numeral generally designates a road grader on which the wing assembly comprising the present invention is adapted to be installed. As is conventional, there is vertically adjustably mounted on the road grader 10 a standard 12 by means of a collar or bracket 14, there being a fastener as at 16 for adjusting the position of the standard 12.

The wing blade 18 is adjustably secured at one end for pivotal movement relative to the standard 12 by means of a bracket 20 which is engaged about the standard 12 and which is secured by means of a fastener 22 to the blade 18. A telescopic rod 24 has one telescopic section 26 pivotally attached, as at 28, to a lug or ear 30 attached to the blade 18 towards the outer end of the blade 18. The telescopic section 26 can be a rod received within the tubular section 32 of the telescopic rod 24, or may be a tube (not shown) received in overlying relationship on the section 32 of the telescopic rod 24. A collar 27 is secured on the telescopic section and a spring 29 yieldingly engaging said collar urges said telescopic section 26 outwardly.

The telescopic rod 24 is slidably received in a sleeve 36 carried by the bifurcated end 38 of a bracket 40 adapted to be welded or otherwise secured to a mounting plate 42 on the grader 10.

By means of a stand or other suitable support 44 secured to the mounting plate 42, there is supported on the grader a cylinder 46 within which a pulley 48 is received. The pulley 48 is secured to one end of a spring 50, the other end of the spring 50 being secured to an eye 52 carried by the cylinder 46.

A cable 54 having one end secured by means of a fastener 56 to the cylinder 46 is entrained about the pulley 48 and is further entrained about another pulley 58 mounted outwardly of the cylinder 46. The cable 54 is then entrained about a winch 60 connected by a suitable shaft 62 to the power take-off 64 of the road grader 10. The cable 54 is engaged about a pulley 66 and thence at its other end is secured, as by fasteners 68, to the rear most end of the telescopic rod 24.

Brake means are provided for the winch 60 and include a brake drum 70 connected by a plate 72 and shaft 74 to the winch 60. Brake shoes 76 actuated by a hydraulic cylinder 78 mounted within the drum 70 are provided, the cylinder 78 being connected through hydraulic lines 80 to a master pressure cylinder 82 and the brake control 84. The brake mechanism therefore controls the position of the winch 60.

The operation of this device is quite simple. With the driver occupying the drivers seat of the road grader, adjustment of the wing blade 18 is quite simple. Actuation of the power take-off 64 of the road grader will cause the winch 60 to operate, the brake mechanism having been released. This will cause movement of the telescopic rod 24 within the sleeve 36 due to operation of the cable 54. This will cause the blade 18 to pivot relative to the standard 12, as may be desired. It is noted that the blade 18 is vertically maintained in its desired position due to the operation of the rod 24.

The spring 50 continuously maintains the cable 54 taut, and hence, the blade 18 in a forwardmost position and functions as a take-up device for the cable 54 as it is payed or wound in by the winch 60.

The pulley 66 is a double pulley and a cable 88 is entrained therearound and terminally connected to the winch 60 and the collar 27. This cable 88 prevents flopping of the wing blade 18 in conjunction with spring 29 and serves to form a resilient mounting for the wing blade 18.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes Will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claim.

What is claimed as new is as follows:

A wing assembly for a road grader comprising a standard adapted to be adjustably carried by a road grader, a wing blade adjustably pivotally mounted at one end Patented June 19, 1956 thereof on said staiadai'Q-a bracket adapted to be secured to a road grader and including a pivotally mounted sleeve, a rod pivotally attached to said wing blade, said rod being slidably received in said sleeve, a Winch adapted to be carried by a road i'g rader, a cableentrained about said rod in said sleeve, and brake means for holding said winch to' m'aintain' the adjusted position of said rod in said sleeve, a cylinder adapted-to'be carried by a road grader, a

References Cited in the file of this patent UNITED STATES PATENTS Nickess Feb. 28, 1933 Messick Nov. 28, 1933 Ross Feb. 4, 1936 Ross Apr. 14, 1942 Austin Oct. 20, 1942 Gustafson Oct. 26, 1943 

